Question

the position of stone dropped from rest from a cliff is given by x=5t^2.what is the velocity of stone at t=3s ?​

Answer 1

Explanation:

Position is given by x=5t²

So we need velocity

for velocity we will need to differentiate x with respect to 't'

i.e x=5*2t=10t

at t=3sec

10{3}=30m/s

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